Binnewies, T.Helmcke, J.Riehle, F.Sterr, U.Wilpers, G.2004-12-032004-12-0320012001http://hdl.handle.net/2003/105710.17877/DE290R-3961enThe American Physical SocietyPhysical Review Letters530Doppler Cooling and Trapping on Forbidden Transitions10.1103/PhysRevLett.87.123002article (journal)